Coin vault lock assembly



Nov. 10, 1970 R. L. DAUl-:NBAUGH 3,538,724

COIN VAULT LOCK ASSEMBLY 5 Sheets-Sheet 1 Filed July 26. 1968 Nov. l0, i970 n.1.. DAUENBAUGH 3,538,724

COIN VAULT LOCK ASSEMBLY Filed July 26, 1968 5 SheelLS-Sheel'l 2 NOV 10, 1970 R. l.. DAUENBAUGH 3,538,724

COIN VAULT LOCK ASSEMBLY 5 Sheets-Sheet 3 Filed July 26. 1968 Nov. l, H970 R. cmuxanssAuGI-l 3,538,724

COIN VAULT LOCK ASSEMBLY fyi@ 5 Sheets-Sheet 4 ,ffl/3 Filed July 26, 1968 f/04 /6 qb Nov. l0, i970 R. L. DAUENBAUGH 3,538,724

G01N vAULT LocK ASSEMBLY Filed July 26, 1968 'IIIIIV l United States Patent 3,538,724 COIN VAULT LOCK ASSEMBLY Robert L. Dauenbaugh, Rockford, Ill., assguor to Keystone Consolidated Industries, Inc., a corporation of Delaware Filed July Z6, 1968, Ser. No. 747,929 Int. Cl. Eb 65/44; EOSc 5/00; A47b 88/04 U.S. Cl. l0-86 19 Claims ABSTRACT 0F THE DISCLOSURE A lock assembly for a coin box or vault utilized in a vending machine or other application including a coin box secured to a face plate having locking means to lock the face plate in an opening in the machine with the coin box positioned therein to receive deposited coins. The lock assembly includes a security bushing and a plate tumbler lock having a rotatable plug rotating a driver connected to a cam plate to advance and retract lock bolts extending outwardly from the sides of the face plate to engage the edges of the opening in the machine. The assembly also includes a lock retainer plate normally in an inoperative position, but when shifted to operative position allows removal and replacement of the tumbler lock and driver.

The present invention relates to a coin vault lock assembly an more particularly to a lock assembly to retain a coin box or vault within a vending or similar machine and to prevent or inhibit tampering with the lock by unauthorized personnel.

In coin-operated vending machines, one or more coins are deposited in a slot in the machine so that the purchaser can obtain one of the articles being vended, such as cigarettes, candy or containers for cotfee, soft drinks, etc., and upon the supplying of the article, the coins are released and drop through a chute into a coin box or vault. The coin vault can be similarly used for coinoperated laundromat machines etc. A service representative having an authorized key periodically unlocks the machine or the coin Vault to remove the coins therein for collection by the owner or operator of the machine. Unauthorized persons have attempted to pick or tamper with the locks for the coin vault to remove the box and contents; thus, security is an important problem in these vending machines. The present invention provides a coin vault and lock assembly which more completely resists tampering or picking of the lock and provides a positive and secure locking connecting between the coin vault and the vending machine.

Among the objects of the present invention is the provision of a coin vault assembly having a coin box or vault rigidly secured to a face plate and locking assembly and adapted to be received within an opening in a vending machine. The face plate has a lock assembly associated therewith including a security bushing in a passage at the front of the face plate and axially aligned with a tumbler lock in the passage having a rotatable plug, and a plurality of lock bolts actuated by the plug to reciprocate between advanced and retracted positions at the sides or edges of the face plate; the bolts in advanced position extending behind and engaging the edges of the opening in the machine. The assembly also includes a lock retainer which in normal position prevents removal of the tumbler lock from the face plate.

Another object of the present invention is the provision of a coin vault lock assembly in the face plate secured to the coin vault or box and having a tumbler lock with a rotatable plug and a bolt and driver secured thereto. The bolt and driver is provided with a radial arm integral therewith, and is received in a complementary 3,538,724 Patented Nov. l0, 1970 fice opening in a cam plate, which in turn is operatively connected to lock bolts for reciprocation between advanced and retracted positions upon rotation of the lock plug, driver and cam plate. The cam plate includes a pair of oppositely disposed arcuate slots that vary in radial distance from the axis of rotation along the length of the slot. Each slot receives a pin on one of the lock bolts for reciprocable actuation thereof upon rotation of the cam plate.

A further object of the present invention is the provision of a coin vault lock assembly mounted in a face plate, which is secured to the coin vault, with the lock assembly including a tumbler lock having a rotatable plug and a bolt and driver, and a cam bolt having a complementary opening receiving the bolt and driver. The cam bolt includes a pair of oppositely disposed bolt arms on the periphery of the cam and a pair of oppositely disposed arcuate slots for actuation of a pair of reciprocable lock bolts which are positioned relative to the face plate in alternate positions to the bolt arms on the cam bolt.

The present invention also comprehends the provision of a coin vault lock assembly having a removable tumbler lock in the face plate and a lock retainer shiftable between an inoperative normal position retaining the tumbler lock in the face plate and an operative position allowing removal of the tumbler lock. The lock retainer includes an opening complementary to the tumbler lock and the bolt and driver but normally out of alignment therewith. The lock retainer may be either rotated or laterally shifted from the inoperative to the operative position allowing removal of the tumbler lock and driver.

The present invention further comprehends the provision of a coin vault lock assembly having a face plate rigidly secured to a coin vault or box and a security member mounted in the face plate and rotatable independently of the tumbler lock actuating the reciprocable lock bolts. The rotatable security member has a central keyway therethrough to receive a key and which may be rotated by the key Without actuating the tumbler lock. This security member prevents the picking of the tumbler lock or forcing with an improper key.

A further object of the present invention is the provision of a coin vault lock assembly having a face plate rigidly secured to a coin vault or box and housing a security tumbler plug. This rotatable plug does not actuate the lock bolts for the coin vault but must be actuated by the proper key if the lock bolts are to be actuated. The coin box includes a second tumbler lock axially aligned with the security plug so that both the plug and tumbler lock receive the extended blade of a key. The rotatable plug of the coin box tumbler lock actuates a cam plate which in turn reciprocates the lock bolts, and the key blade is bitted to actuate both the security plug and the coin box tumbler lock simultaneously.

Further objects are to provide a construction of maximum simplicity, eiciency, economy and ease of assembly and operation, and such further objects, advantages and capabilities as will later more fully appear and are inherently possessed thereby.

In the drawings:

FIG. 1 is a perspective view of a coin vault lock assembly including the coin vault and face plate.

FIG. 2 is a side elevational view of the coin vault lock assembly with the coin vault partially broken away.

FIG. 3 is a rear elevational View of the coin vault lock assembly with the coin vault removed.

FIG. 4 is a vertical cross sectional view taken on the line 4-4 of FIG. 3.

FIG. 5 is a rear elevational view of the cam bolt and slide bolts taken on the line 5 5 of FIG. 2, with the retaining washer for the driver omitted.

FIG. 6 is a view similar to FIG. 5 but with the bolts in retracted position.

FIG. 7 is an exploded perspective view of the cylinder lock, cam bolt, slide bolts, back plate, lock retainer slide and coin Vault of the present assembly.

FIG. 8 is a rear elevational 'view similar to FIG. 3 but showing a second embodiment of lock assembly.

FIG. 9 is an enlarged vertical cross sectional View taken on the line 9-9 of FIG. 8.

FIG. 10 is an exploded perspective view of the cylinder lock, cam bolt, slide bolts, lock retainer, back plate and coin vault of the assembly of FIG. 8.

FIG. l1 is a partial cross sectional View taken on the line 11-11 of FIG. 10.

FIG. 12 is a top plan view of a third embodiment of coin vault lock assembly.

FIG. 13 is a side elevational view of the lock assembly with the coin vault partially broken away.

FIG. 14 is a side elevational View of the lock assembly with the coin vault omitted.

FIG. 15 is a front elevational view of the cam plate and slide bolts taken on the line 15-15 of FIG. 14.

FIG. 16 is a view similar to FIG. 15 but showing the lock bolts in retracted position.

FIG. 17 is a vertical cross sectional view taken on the line 17-17 of FIG. 12.

FIG. 18 is a rear elevational view of the face plate.

FIG. 19 is an enlarged front elevational view of the cam plate.

FIG. 20 is an enlarged side elevational view of the cam plate.

FIG. 21 is a front elevational view of an upper or lower slide bolt.

FIG. 22 is a vertical cross sectional view taken on the line 22-22 of FIG. 21.

FIG. 23 is a front elevational view of a side slide bolt.

FIG. 24 is a front elevational View of the back plate.

FIG. 25 is an enlarged perspective view of the lock retainer clip.

FIG. 26 is a side elevational view of the key for the third embodiment of lock assembly.

Referring more particularly to the disclosure in the drawings wherein are shown illustrated embodiments of the present invention, FIG. 1 discloses a coin vault assembly 10 for use on vending machines 11, such as merchandise vending machines, or other coin-operated machines, such as washing and/ or drying machines in laundromats, where coins deposited in the machine drop through a chute or other means into a coin vault or box 14 positioned within the machine. The machine has an opening 12 in the front wall of the machine to allow insertion or removal of the coin vault or box 14. The assembly 10 includes a face plate 15 rigidly secured to the coin box 14 and of such dimensions so as to cover and slightly overlap the edges 13 of the opening 12, and locking means to retain the face plate 15 on the machine.

The face plate 15 may be of any suitable exterior configuration and has a stepped central opening or passage 16 therethrough. A security bushing 18 having a keyway 19 therethrough is received in the counterbored front end 17 of the stepped passage 16 and the bushing is retained therein by the flange 21 in the counterbore 17, and a retaining ring 22 in a groove cooperates with a shoulder 23 formed in the stepped passage 16. The rear face 24 of the face plate 15 includes posts 25 extending rearwardly at the four corners of the face 24 and forming spaces therebetween for guiding movement of a plurality of locking bolts to be later described.

The rear face 24 also has a central rearwardly extending arcuate flange 26 formed as an extension of the wall defining the passage 16 for a purpose to be later described. A longitudinally extending rib 27 is formed in the wall of passage 16 to cooperate with a slot or groove 29 formed in the cylindrical surface of a tumbler lock 28.

The tumbler lock 28 may be of any suitable design,

4 such as a plate tumbler lock, having a cylindrical lock housing 31 with a rotatable plug 32 therein. The rotatable plug 32 has a reduced rear end 33 with a flattened surface 34 to receive a bolt and driver 35 having a complementary opening therein so as to rotate with the plug. The bolt and driver has a radially extending driver arm 37 and is retained on the plug through a retainer washer 38. The bolt and driver also has an arcuate recess 39 on the periphery thereof cooperating with the rib 27 to limit rotation of the plug and driver. Also the driver arm 37 extends through the opening defined by the arcuate ange 26; the liange limiting the extent of rotation of the driver arm 37 to approximately 60.

Positioned to slidably engage the rear face of the face plate 15 is a rotatable cam bolt 41 having a circular body 42 with a central opening 43 therein to fit over the ange 26, the opening 43 including a wide radial slot 44 adapted to receive the driver arm 37 so as to simultaneously rotate with the bolt and driver 35. Formed on the periphery of the body 42 are a pair of oppositely disposed and axially offset bolt arms 45 which, upon rotation of the cam bolt 41, are projected through the upper and lower notches defined by the posts 25 and beyond the edges of the face plate 15 to engage behind the edges 13 of the opening 12 in the face of the machine 11. The rear face 24 of the face plate 15 is also provided with a pair of oppositely disposed stops 46 to limit outward movement of the bolt arms'45.

The cam bolt body 42 is provided with a pair of arcuate slots 47 oppositely disposed thereon and of a progressively increasing radial distance from the axis of rotation of the cam bolt 41 along the length of each slot. Each slot terminates in a short straight portion 48 at the point of greatest radial distance of the slot. Each slot 47 receives a pin or projection 51 on the inner offset end `52 of a generally T-shaped slide bolt 49. Each slide bolt V49 has a relatively wide head 53 which moves in the guideway formed between the posts 25 at the sides of the face plate 15 to engage behind the edges 13 of the opening 12. Thus, rotation of the cam bolt 41 causes simultaneous advancement or retraction of the bolt arms 45 and the slide bolts 49.

Positioned behind and retaining the cam bolt 41 and the slide bolts `49 is a back plate 54 having openings 55 at the corners aligned with threaded openings 56 in the posts 25 and a central opening `57 having a radial slot 58 identical to and aligned with the opening 43 and slot 44 in the cam bolt 41 and aligned with the tumbler lock 28 and driver 35. The plate also has a pair of oppositely disposed flared openings 59 receiving the reduced ends of the stops 46 which are headed or flared to retain the face plate 15, cam bolt `41, slide bolts 49 and back plate 54 together. The back plate is also provided with a rearwardly extending guide projection 61 received in an elongated guide slot 63 in a lock retainer slide 62.

The lock retainer slide 62 is of the same general dimensions as the back plate and is provided with elongated slots 64, 64 aligned with the openings 56 in the posts 25 at one end of the face plate 15 and a pair of slots 65, 65 which open at the edge 66 opposite to the slots 64, 64. The slide is also provided with an irregular opening 67 having a radial slot 68 identical to but laterally offset from the opening 57 and slot 58 of the back plate 54. The slide 62 is retained on the assembly by machine screws 69 threadedly engaging in the threaded openings 56 in the posts 25; the screws passing through the openings 55 in the back plate 54.

The lock retainer slide 62 is normally in the position shown in FIG. 3 aligned with the back plate 54 and with the opening 67 out of alignment with the tumbler lock 28. If the owner or authorized agent for the machine wishes to repair or replace the lock or change the cornbination thereof, the lock 28 and the bolt and driver 35 may be removed as a unit by rotating the plug 32 until the driver arm 37 is aligned with the slots 44 and 5S of cam bolt -41 and face plate 54, respectively. Then the screws 69 are loosened and the slide 62 moved laterally until the opening 67 and slot 68 are aligned with the tumbler lock 28, and the lock is removed through the cam bolt 41, the back plate 54 and the slide 62. After any adjustments are made to the lock 28, the lock or its replacement are reinserted and the slide 62 returned to its normal position, after which the screws 69 are tightened.

Secured to the rear of the face plate by the screws 69 and abutting the lock retainer slide 62 is the coin vault or box 14 having a front face and flange 71 with openings 72 receiving the screws 69, side walls 73, a rear wall 74 and a bottom wall 75. The front face 71 has a central opening 76 and radially extending slot 77 of the same size and aligned with the opening 57 and slot 58 in the back plate 54 to allow removal of the tumbler lock 28 and the driver 35 without removal of the coin box 14 from the face plate 15. The walls 73, 73 each has recesses 78 formed therein aligned with the openings 72 to allow access to the heads of the screws 69'.

In operation, the face plate 15 having the lock 28 and driver 35, the cam bolt 41, the slide bolts 49, the back plate 54, and the lock retainer slide 62, is secured to the coin box 14. When the box 14 is inserted into the opening 12 in a machine 11 so that the front panel 15 abuts the edges 13, the key 79 in the keyway 19 of the tumbler lock 28 rotates the security bushing 18 and the plug 32 to rotate the driver 35 and the cam bolt 41 to project the bolt arms 45 behind the upper and lower edges 13 of the opening 12. Simultaneously the slide bolts 49, 49 are projected outwardly behind the side edges 13 of the opening 12 due to the cooperation between the pins 51, 51 on the slide bolts 49, 49 with the arcuate slots 47, 47 in the cam bolt 41 (FIG. 5). The short straight portions 48, 48 of the slots 47, 47 cooperate with the pins 51, 51 tending to retain the slide bolts 49, 49 in extended or deadlocked position. The rib 27 in the face plate 15 cooperates with the recess 39 in the driver 35 to limit the extent of rotation of the plug 32, the ange 26 limits movement of the driver 35, and the projections 46, 46 tend to limit movement of the cam bolt 41.

The key 79 can be removed when the face plate 15 and box 14 are locked within the machine, and the tumbler lock may be arranged so that the key cannot be removed from the tumbler lock when in unlocked position so that the coin box must be inserted and locked in the machine to obtain the key. To remove the coin box 14, the above operation is reversed to withdraw the bolt arms 45, 45 and the slide bolts 49, 49 thus allowing removal of the face plate 15 and the coin box 14 (FIG. 6).

If the tumbler lock 28 is to be removed to alter the plate tumbler arrangement or to replace the tumbler lock with a new lock where a key of the former lock has been lost or stolen, the coin box 14 must be unlocked and removed from the machine 11. Then the screws 69 are loosened suiciently to allow sliding movement of the lock retainer slide 62. The slide 62 is moved laterally as limited by slots 64, 64 and the guide slot 63 to align the opening 67 having radial slot 68 with the tumbler lock 28 and driver 35. The tumbler lock 28 can be removed through the coin box 14 and altered or replaced. Once the face plate 15 has a new or altered tumbler lock 28 therein, the slide 62 is moved to inoperative position and the screws 69 tightened. The coin box 14 is then ready for use.

FIGS. 8 to ll, inclusive, disclose an alternate embodiment of coin vault lock assembly 10a with identical parts having the same reference numerals with the addition of a superscript a. The assembly includes a front panel 158A having a rotatable security bushing 18a, a tumbler lock 28a, a bolt and driver 35a, a rotatable cam bolt 41a, reciprocable slide bolts 49a and a back plate 54a. The coin box 14a is secured onto the posts 25'c1 by screws 69EL to retain the coin box 14a and lock assembly 6 10a as a unit to be inserted in an opening 12fL of a vending machine 11a.

Replacing the lock retainer slide of the first embodiment of the lock assembly is a rotatable lock retainer which is sandwiched between the cam bolt 41a and the back plate 54a. The lock retainer 80 includes a generally circular body 81 having a a central opening 82 and radial slot 83 similar to the opening 57a and slot 58a in the back plate 54a except that when the retainer 80 is in normal position, the. slot `83 is angularly removed from the slot 58a of the back platte. The body 81 has an arm 84 extending outwardly and laterally of the body 81 and terminates in a gripping ilange 85 perpendicular to the body. A depending circular portion 86 on the arm 84 has a spherical embossment 87 thereon adapted to cooperate with a hole in the back plate 54a to secure the retainer in the inoperative position.

The back plate 54a has an elongated notch 89 in the upper edge thereof to receive the ange 85 when the lock retainer is in its normal inoperative position. This embodiment operates in exactly the same manner to lock or unlock the coin box 14a from the machine 11a. If one desires to remove and replace the tumbler lock 29a, the coin box 14a yand front panel 15a must be unlocked and removed from the machine, and the key is then rotated to project the bolts to their locked position to align the driver 35a1 with the radial slot 58a in the back plate 54a. The tab or flange 85 is then lifted to rotate the lock retainer 80 about the arcuate ange 26a to align the radial slot 83 with the slot 58a in the back plate 54a. The tumbler lock 28a can then be removed through the lock retainer 80, back plate 54a and front wall i1a of the coin box 14EL and altered or replaced. Once a tumbler lock 28a and driver 35a are positioned in the front panel 15, rotation of the lock retainer 80 is reversed until the ange 85 is returned to the notch 89 in the back plate 54a and the emboss 87 is returned to the hole 90 in the back plate 54a, and the assembly is again ready for use.

FIGS. 12 to 25 disclose a third embodiment of the lock assembly 10b with parts identical to those of the first embodiment having identical reference numerals with a superscript b. This assembly includes a front panel 15b and a coin box 113, the front panel having a central passage 16b therethrough. Positioned within the passage 16b is a security lock plug 91 having a central keyway 92 and openings or slots to receive plate tumblers 93. The passage 16D includes oppositely disposed longitudinal grooves 94 to receive the ends of the plate tumblers biased outwardly by tumbler springs. The plug 91 is retained in the front panel 15b by a retaining ring 95 engaging a groove at the rear of the plug and a ilange 96 at the face of the plug. The plug 91 is not attached to the locking system for the coin box but is free to rotate when the key is inserted to retract the tumblers 93.

The face plate 15b is provided with a rearwardly extending corner posts 25b forming guideways or openings 97 for the reception and guiding of upper and lower lock bolts 98, 98 and side lock bolts 104, 104. The upper 4and lower lock bolts each have a bolt member 99 with a central inwardly extending shank 101 having an embossment or projection 102 thereon. Also, each bolt has a pair of diverging camming arms 103, 103 cooperating with the side bolts 104, 104. Each side bolt 104 includes a locking end 105 and an inward portion having a pair of converging camming recesses 106, 106; the camming recesses 106, 106 on a side bolt 104 receiving one camming arm 103 from each of the upper land the lower bolts 98, 98. The `corner posts 251 guide the projection and withdrawal of the bolts.

Sandwiched between the bolts 98, 98, 104, 104 and a back plate 54b is a circular cam plate 107 having `a central opening 108, a pair of diametrically opposed openings 109, 109 and a pair of diametrically opposed arcuate slots 111, 111; each slot having a short straight end portion 112. Each arcuate slot is of an increasing radical distance, with the flattened portion 112 farthest away, from the center of the plate and receives an embossment or projection 102 of an upper or lower bolt 98. Thus, rotation of the cam plate 107 causes inward or outward movement of the upper and lower `bolts 98, 98 due to the cooperation between the slots 111, 111 and the embossments 102, 102, and the side bolts 104, 104 simultaneously move inward or outward due to the cooperation between the camming arms 103, 103 of the bolts 98, 98 and the camming slots or recesses 106, 106 of the side bolts 104, 104.

The back plate 54b is secured onto the front panel 15b through the screws 69b extending through openings 55b into threaded recesses in the posts 25h. The plate has a central opening 57b of a diameter approximately that of the passage 16", but which is not required for the removal of the security plug 91. Secured to the front plate 15b and the back plate 54b is the coin box 113 having a front wall 114 with openings 115 to accommodate the screws 69b and an opening 116 aligned with the opening 57b in the back plate 54h. The box 113 also has side walls 117, 117, a rear wall 118 and a bottom wall 119.

Formed integral with the front wall 114 and the bottom wall 119 is a cylindrical lock housing 121 having an opening 122 aligned with the opening 116 extending therethrough to receive a plate tumbler lock 123 having a rotatable plug 124 therein. One end 125 of the plug is flanged and a pair of diametrically opposite pins 126 are inserted into openings in the anged end 125 and extend through the opening 116 in the front wall 114 and the opening 57b of the back plate 54b and extend into and are secured, as by riveting, in the openings 109, 109 of the cam plate 107. The plug 124 also has a keyway therein generally aligned with the openings 116 and 57h, the opening 108 in the cam plate 107 and the keyway 92 in the security plug 91. At the inner end of the housing 121 is a generally vertical slot 127 extending across the housing 'and aligned with the back end 128 of the tumbler lock 123, which slot 127 accommodates a generally U-shaped or bifurcated spring clip 129 (FIG. 25) to retain the tumbler lock 123 therein. The clip 129 has a gripping lip or flange 131 at the upper end, and a pair of depending legs 132 bifurcated to straddle the lock assembly retaining clip and having a sinuous shape so that the resiliency of the sinuous legs 132 retains the clip in the slot.

This lock assembly b must be `actuated by a key 133 (FIG. 26) having a shank or blade 134 that is at least twice as long as a normal key blade. The blade has a set of bittings 135 to acuate the tumblers of the security plug 91 and a second axially spaced set of bittings 136 to actuate the tumblers of the lock 123. The key blade 134 extends through the keyway 92, opening 108 in the cam plate 107 and the keyway in the lock plug 124. The security plug 91 is utilized to prevent actuation or picking of the tumbler lock 123 which actuates the locking bolts. If the security plug 91 is successfully picked, it will not operate the lock bolts to permit removal of the coin box 113. Also, if the security plug 91 is picked, the keyway 92 would be rotated out of phase with the keyway in the reset lock 123 blocking any key from entering the lock 123 and, at the same time, greatly eliminating the possibility of getting a picking tool through both locks to pick the lock 123. Also, there is an inability to apply picking torque to the lock 123.

The four-way locking of the coin box 14, 14a, or 113 into the vending machine provides a positive locking action and the lock bolts are designed to align themselves on opposing cam surfaces to eliminate cocking in operation. The lock may be designed so that the key 133 cannot be removed when the lock bolts are retracted. With the bolts retracted, the front panel b and coin box 113 are inserted into the machine 11b with the front panel 15b abutting the edges 13b of the opening 12b and the key 133 is rotated to locking position. Rotation of the key causes simultaneous rotation of the security plug 91 and the plug 124 of the reset lock 123. Rotation of the plug 124 in turn causes rotation of the cam plate 107 and 8 projection of the upper and lower bolts 98, 98 and the side bolts 104, 104 simultaneously to advance behind the edges 13b of the opening 12b and retain the lock assembly 10b in coin receiving position. To remove the lock assembly 10b, the above movements are reversed with rotation of the key 133 retracting the lock bolts.

If the reset lock 123 is to be altered or replaced, the retainer clip 129 is removed from the slot 127 and the lock 123 is slipped out of the opening 122 in the housing 121. When the altered or a new lock is reinserted into the housing 121, the pins 126 enter the openings in the plug 124 and the clip 129 is reinserted into the slot 127. While coin vault lock assemblies of particular and effective shapes have been shown and described by way of illustration, it is not my intent or desire to unnecessarily limit the improvement by virtue of these illustrative embodiments.

Having thus disclosed my invention, I claim:

1. A coin vault lock assembly for the positioning and retaining of a coin vault in an opening in a coin-operated' machine to receive the coins deposited therein, comprising a face plate of a size slightly large than the opening of the machine, a coin vault secured to the rear face of the face plate and received within said opening, a back plate between said face plate and said coin vault and spaced from said face plate, a rotatable cam plate positioned between said face plate and said back plate, lock bolt means located between said face plate and said back plate and operatively connected to said cam plate to reciprocate between advanced and retracted positions, a tumbler lock in said face plate operatively connected to said cam plate, said cam plate, said back plate and said coin vault having openings aligned with and complementary to the tumbler lock so that the tumbler lock may be removed through said cam plate, back plate and coin vault, and a lock retainer positioned between said cam plate and said back plate and having an opening complementary to but normally out of alignment with the tumbler lock to retain the tumbler lock in said face plate.

2. A coin vault lock assembly as set forth in claim 1, in which said cam plate has a pair of oppositely disposed bolt arms, and said lock -bolt means includes a pair of reciprocable side lock bolts.

3. A coin vault lock assembly as set forth in claim 2, in which said cam plate has a pair of diametrically opposite arcuate slots of increasing radial distance, and said side lock ybolts each has an embossment received in one of the arcuate slots.

4. A coin vault lock assembly as set forth in claim l, including a security bushing positioned ahead of said tumbler lock and freely rotatable in said faceplate, said bushing having a keyway therethrough and prevents picking of said tumbler lock.

S. A coin vault lock assembly as set forth in claim 1, including corner posts projecting rearwardly from said face plate to abut said back plate and defining upper, lower and side openings therebetween to receive said lock bolt means in advanced position, and screws threadingly engaging said corner posts to secure Said back plate and said coin vault to the face plate.

6. A coin vault lock assembly for the positioning and retaining of a coin vault in an opening in a coin-operated machine to receive the coins deposited therein, comprising a face plate of a size slightly larger than the opening of the machine and having a central passage therethrough, a coin vault secured to the rear face of the face plate and received within said machine opening, a back plate between said face plate and said coin vault and spaced from said face plate to define upper and lower and side open ings therebetween, a rotatable cam plate positioned between said face plate and back plate, lock bolt means operatively connected to said cam plate to reciprocate between advanced and retracted positions in the upper, lower and side openings, a security bushing freely rotatable in the passage at the face of the face plate, and having a keyway therein, a key-actuated tumbler lock in said passage behind said security bushing and operatively connected to said cam plate, said tumbler lock including a rotatable plug having a driver adjacent the rear end thereof, said cam plate, said back plate and said coin -vault each having a central opening therein aligned with and complementary to the tumbler lock and driver so that the tumbler lock may be removed through said cam plate, back plate and coin vault, and a lock retainer positioned behind said cam plate securing said tumbler lock in said face plate and having an opening complementary to but normally out of alignment with the tumbler lock and driver.

7. A coin vault lock assembly as set forth in claim 6, in which said lock bolt means includes a pair of diametrically oppositely disposed bolt arms integral with said cam plate, and a pair of reciprocable side lock bolts, said cam plate having a pair of diametrically opposite arcuate slots of increasing radial distance, said side lock bolts each having an embossment received in one of said arcuate slots.

8. A coin vault lock assembly as set forth in claim 6, in which said lock retainer comprises a lock retainer slide positioned between said back plate and said coin vault and adapted for lateral movement between a normal inoperative position and an operative position, said opening in the lock retainer slide being normally laterally out of alignment with said tumbler lock and driver.

9. A coin vault lock assembly as set forth in claim 8, including an embossment on said back plate, said lock retainer slide having an elongated slot receiving said emlbossrnent to limit lateral movement of the slide, said screws retaining said coin Vault and face plate together requiring loosening to allow lateral movement of said slide.

10. A coin vault lock assembly as set forth in claim 6, in which said face plate includes a rearwardly projecting arcuate flange providing an extension of said central passage, and said lock retainer comprises a circular plate having a central opening accommodating said arcuate flange with a radial slot complementary to said driver, said circular plate being rotatable about said arcuate ange with said radial slot normally being out of alignment with said driver.

11. A coin vault lock assembly as set forth in claim 10, in which said lock retainer is positioned between said cam plate and said back plate and has a generally radially extending arm terminating in a tab perpendicular to the arm and circular plate, and said back plate has a notch in the upper edge thereof receiving said tab when the retainer is in inoperative position.

12. A coin vault lock assembly as set forth in claim 11, in which said radial arm of the lock retainer includes an embossment which cooperates with a hole in the back plate to prevent rotary movement of the lock retainer.

13. A coin vault lock assembly for the positioning and retaining of a coin vault in an opening in a coin-operated machine to receive the coins deposited therein, comprising a face plate of a size slightly larger than the opening ofthe machine and having a central passage therethrough, a security lock plug rotatably mounted in said passage and having a keyway therethrough and lock tumblers biased to prevent rotation, a coin vault secured tothe rear face of the face plate and received within said opening, a back plate between said face plate and said coin vault and spaced from said face plate to define upper and lower and side openings therebetween, a rotatable cam plate positioned between said face plate and said back plate, lock bolt means reciprocable ibetween advanced and retracted positions in the upper, lower and side openings operatively connected to said cam plate, a'lock housing integral with said coin vault and having a passage therein, a key-actuated tumbler lock operatively connected to said cam plate positioned in said last mentioned passage and axially aligned with said security lock plug, and a lock retainer securing said tumbler lock in said lock housmg.

14. A coin vault lock assembly as set forth in claim f13, in which said lock bolt means includes an upper lock bolt, a lower lock bolt and a pair of side lock 'bolts which are projected behind the edge of the machine defining the opening to retain the coin vault therein.

15. A coin Vault lock assembly as set forth in claim 13, in which said key for such lock assembly has an elongated shank of a length to pass through the keyways of the security lock plug and the tumbler lock, and a pair of axially spaced bittings on said blade, one set of ibittings actuating the security plug and the other set of bittings actuating said tumbler lock.

16. A coin vault lock assembly as set forth in claim 13, in which said cam plate has a central opening to allow passage of a key blade therethrough, said tumbler lock has a rotatable plug releasa'bly connected to said cam plate, and said lock bolt means includes an upper lock bolt and a lower lock bolt each operatively connected to said cam plate, and a pair of side lock bolts each operatively connected to said upper and lower lock bolts so that said lock bolts are projected or retracted simultaneously upon rotation of said cam plate.

17. A coin vault lock assembly as set forth in claim 16, in which said cam plate has a pair of diametrically opposite arcuate slots of increasing radial distance, and said upper and lower lock bolts each have an embossment thereon received in one of said arcuate slots.

18. A coin vault lock assembly as set forth in claim 16, in which each of said upper and lower lock bolts has a pair of inwardly diverging camming arms, and each of said side lock bolts has a pair of inwardly diverging camming recesses, said recesses of each side lock bolt receiving one camming arm from each of said upper and lower lock bolts.

19. A coin vault lock assembly as set forth in claim 13, in which said lock housing in the coin vault has a transverse slot adjacent the rear end thereof, and said lock retainer comprises a generally U-shaped spring clip received in said slot to prevent removal of the tumbler lock.

References Cited UNITED STATES PATENTS 2,604,259 7/1952 Anderson 232-15 3,056,544 10/ 1962 Sollenberger 232-16 3,083,563 4/1963 Greenwald 70-417 3,276,835 10/1966 Hall 312-333 MARVIN A. CHAMPION, Primary Examiner E. I. McCARTHY, Assistant Examiner Us. C1. X.R. 

